v3.25.4
Equity (Accumulated Other Comprehensive Income) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]      
Beginning Balance $ 60,460 $ 57,768 $ 48,326
Ending Balance 66,479 60,460 57,768
AOCI Including Portion Attributable to Noncontrolling Interest      
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]      
Beginning Balance (126) (153) (218)
Other comprehensive income (loss), before reclassifications 115 31 52
Amounts reclassified from AOCI 2 6 16
Total other comprehensive income, net of tax 117 37 68
Less other comprehensive (income) loss attributable to noncontrolling interests   (10) (3)
Ending Balance (9) (126) (153)
Net Unrealized Gains (Losses) on Available for Sale Securities      
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]      
Beginning Balance (37) (39) (69)
Other comprehensive income (loss), before reclassifications 31 (3) 17
Amounts reclassified from AOCI 6 5 13
Total other comprehensive income, net of tax 37 2 30
Less other comprehensive (income) loss attributable to noncontrolling interests   0 0
Ending Balance 0 (37) (39)
Defined Benefit Pension and Other Benefits Plans      
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]      
Beginning Balance (19) (79) (101)
Other comprehensive income (loss), before reclassifications 52 60 21
Amounts reclassified from AOCI 0 0 1
Total other comprehensive income, net of tax 52 60 22
Less other comprehensive (income) loss attributable to noncontrolling interests   0 0
Ending Balance 33 (19) (79)
Net Unrealized Gains (Losses) on Foreign Currency Translation      
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]      
Beginning Balance (101) (64) (74)
Other comprehensive income (loss), before reclassifications 29 (27) 13
Amounts reclassified from AOCI 0 0 0
Total other comprehensive income, net of tax 29 (27) 13
Less other comprehensive (income) loss attributable to noncontrolling interests   (10) (3)
Ending Balance (72) (101) (64)
Other Comprehensive Income Related to Equity Method Investees      
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]      
Beginning Balance 8 7 6
Other comprehensive income (loss), before reclassifications 3 1 1
Amounts reclassified from AOCI 0 0 0
Total other comprehensive income, net of tax 3 1 1
Less other comprehensive (income) loss attributable to noncontrolling interests   0 0
Ending Balance 11 8 7
Accumulated Gain (Loss), Cash Flow Hedge, Including Noncontrolling Interest      
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]      
Beginning Balance 23 22 20
Other comprehensive income (loss), before reclassifications 0 0 0
Amounts reclassified from AOCI (4) 1 2
Total other comprehensive income, net of tax (4) 1 2
Less other comprehensive (income) loss attributable to noncontrolling interests   0 0
Ending Balance $ 19 $ 23 $ 22